81519480

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:331

約数の個数: 256

約数和(自身を含む): 319334400

約数和(自身を除く): 237814920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 41, 42, 45, 54, 56, 60, 63, 70, 72, 82, 84, 90, 105, 108, 120, 123, 126, 135, 140, 164, 168, 180, 189, 205, 210, 216, 246, 252, 263, 270, 280, 287, 315, 328, 360, 369, 378, 410, 420, 492, 504, 526, 540, 574, 615, 630, 738, 756, 789, 820, 840, 861, 945, 984, 1052, 1080, 1107, 1148, 1230, 1260, 1315, 1435, 1476, 1512, 1578, 1640, 1722, 1841, 1845, 1890, 2104, 2214, 2296, 2367, 2460, 2520, 2583, 2630, 2870, 2952, 3156, 3444, 3682, 3690, 3780, 3945, 4305, 4428, 4734, 4920, 5166, 5260, 5523, 5535, 5740, 6312, 6888, 7101, 7364, 7380, 7560, 7749, 7890, 8610, 8856, 9205, 9468, 10332, 10520, 10783, 11046, 11070, 11480, 11835, 12915, 14202, 14728, 14760, 15498, 15780, 16569, 17220, 18410, 18936, 20664, 21566, 22092, 22140, 23670, 25830, 27615, 28404, 30996, 31560, 32349, 33138, 34440, 35505, 36820, 38745, 43132, 44184, 44280, 47340, 49707, 51660, 53915, 55230, 56808, 61992, 64698, 66276, 71010, 73640, 75481, 77490, 82845, 86264, 94680, 97047, 99414, 103320, 107830, 110460, 129396, 132552, 142020, 150962, 154980, 161745, 165690, 194094, 198828, 215660, 220920, 226443, 248535, 258792, 284040, 291141, 301924, 309960, 323490, 331380, 377405, 388188, 397656, 431320, 452886, 485235, 497070, 582282, 603848, 646980, 662760, 679329, 754810, 776376, 905772, 970470, 994140, 1132215, 1164564, 1293960, 1358658, 1455705, 1509620, 1811544, 1940940, 1988280, 2037987, 2264430, 2329128, 2717316, 2911410, 3019240, 3396645, 3881880, 4075974, 4528860, 5434632, 5822820, 6793290, 8151948, 9057720, 10189935, 11645640, 13586580, 16303896, 20379870, 27173160, 40759740, 81519480]

約数ペア:

[(1, 81519480), (2, 40759740), (3, 27173160), (4, 20379870), (5, 16303896), (6, 13586580), (7, 11645640), (8, 10189935), (9, 9057720), (10, 8151948), (12, 6793290), (14, 5822820), (15, 5434632), (18, 4528860), (20, 4075974), (21, 3881880), (24, 3396645), (27, 3019240), (28, 2911410), (30, 2717316), (35, 2329128), (36, 2264430), (40, 2037987), (41, 1988280), (42, 1940940), (45, 1811544), (54, 1509620), (56, 1455705), (60, 1358658), (63, 1293960), (70, 1164564), (72, 1132215), (82, 994140), (84, 970470), (90, 905772), (105, 776376), (108, 754810), (120, 679329), (123, 662760), (126, 646980), (135, 603848), (140, 582282), (164, 497070), (168, 485235), (180, 452886), (189, 431320), (205, 397656), (210, 388188), (216, 377405), (246, 331380), (252, 323490), (263, 309960), (270, 301924), (280, 291141), (287, 284040), (315, 258792), (328, 248535), (360, 226443), (369, 220920), (378, 215660), (410, 198828), (420, 194094), (492, 165690), (504, 161745), (526, 154980), (540, 150962), (574, 142020), (615, 132552), (630, 129396), (738, 110460), (756, 107830), (789, 103320), (820, 99414), (840, 97047), (861, 94680), (945, 86264), (984, 82845), (1052, 77490), (1080, 75481), (1107, 73640), (1148, 71010), (1230, 66276), (1260, 64698), (1315, 61992), (1435, 56808), (1476, 55230), (1512, 53915), (1578, 51660), (1640, 49707), (1722, 47340), (1841, 44280), (1845, 44184), (1890, 43132), (2104, 38745), (2214, 36820), (2296, 35505), (2367, 34440), (2460, 33138), (2520, 32349), (2583, 31560), (2630, 30996), (2870, 28404), (2952, 27615), (3156, 25830), (3444, 23670), (3682, 22140), (3690, 22092), (3780, 21566), (3945, 20664), (4305, 18936), (4428, 18410), (4734, 17220), (4920, 16569), (5166, 15780), (5260, 15498), (5523, 14760), (5535, 14728), (5740, 14202), (6312, 12915), (6888, 11835), (7101, 11480), (7364, 11070), (7380, 11046), (7560, 10783), (7749, 10520), (7890, 10332), (8610, 9468), (8856, 9205)]